FullFace deck will work only with StarsCaption!
Unpack the downloaded archive to the PokerStars root folder.
Default path: C:\Program Files (x86)\PokerStars (or PokerStars.ES, PokerStars.RUSO)
After installing the mod, launch PokerStars via PokerStars.exe (C:\Program Files\PokerStars\PokerStars.exe) or right-click on the PokerStars shortcut on the desktop and select properties, and in the Object section, remove Update in the line "C:\Program Files\PokerStars\PokerStarsUpdate.exe"